Igneous Petrology
Spectacular eruption photograph of Tungurahua volcano, Ecuador from NASA's Astronomy Picture of the Day
A dominant landform near the Cuesta College campus is the chain of volcanic necks known as the Morros or the Seven Sisters. Geologists refer to them in scientific literature as the Morro Rock to Islay Hill intrusive complex. This site describes the geology of the area.
An excellent site for kids on how to build a volcano. From the Natural History Museum.
GeologyRocks
Tungurahua Volcano, Ecuador